Hopper gate actuating mechanism



Oct327, 1931. R. H. BEAUMONT HOPPER GATE ACTUATING MECHANISM 3 Sheets-Sheet 1 Filed May 6, 192a IYC-RI.

WITNESSES 1 N VEN TOR:

ATTORNEYS.

Oct. 27, 1931. R. H. BEAUMONT HOPPER GATE ACTUATING MECHANISM Filed y 6, 1926 3 Sheets-Sheet 2 S m a I N V EN TOR.-

WITNESSES M Q. M

Koberi H fieaamonfi, y 6% A TTORNEYS Oct. 27, 1931. 1,829,182

R. H. BEAUMONT HOPPER GATE ACTUATING MECHANISM 3 Sheets-Sheet 3 W I TNESSES Na. W

INVENTOR: ,Tgbezri'jiBmzmmzz A TTORNEYS.

fi trol discharge'of the ashes-into cars, orother Patented Oct. 27, 1931 ran 1 stares PATENT OFFICE .BBBERT HABEAUMONT, vOF RADNOR, PENNSYLVANIA, :ASSIGNOR TO BEAUMONT MANU- ..FAGCE.TJ'.RIZNG GOHIANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF JERSEY HOPPER GATE .ACTUATZNG: ,MECHANISM Application filed May 6, 1926. Serial No. 107,100.

7 This invention relates to mechanism for actuating'the gates of gravity hoppers, for example ashhoppersof the kind commonly used beneath boilers in power plants to conportablereceptacles; by which they can conveniently be conveyed "to a suitable remote place of disposal. I

The present invention is directed, in the 10 main, toward overcoming the resistance ofcure the foregoing advantages in electrically fered to gate opening and closing with minimum applied power, and to provide simple and reliable mechanism by which this desideratum may be attained.

A further object of my invention is to sedriven actuating mechanism capable of being used either with the longitudinally sliding, or the pivoted type of gates; the same being self governed with capacity to come to rest automatically when the gate reaches the full 7 open and closed positions.

Fig. I of the drawings herewith shows a sectional 'view of the ash pit beneath the boiler of a typical power house and the manner in which the actuating mechanism of my invention is used in connection with hopper gates of the sliding variety.

Fig. II is a plan sectional view taken as indicated by the arrows IIII in Fig. I.

Fig. III is an enlarged view-partly in side elevation and partly in longitudinal sectionshowing the details of the gate actuating mechanism to better advantage.

Fig. IV is a cross sectional view taken as indicated by the arrows IVIV in Fig. III.

Fig. V shows how my novel actuating mechanism may be used to operate hopper gates of the pivoted type; and,

Fig. VI is a detail sectional view taken as indicated by the arrows VIVI in Fig. V.

Referring first to the complete organization of Fig. I, 10 designates the hopper; whereby the ashes are received from a, superlhanger 21 beam 22.

' appropriate lining 14 of refractory material,

and flankedon the back and sides by a continuous channelled trough 15 adapted to receive quenching water seeping from the ashes f in the hopper 10 for the purpose of'conducting-it to a'gutter 16 from which the collected water is-directed, by a conduit'pipe 17 to a suitable place of disposal. The gate 13 is carried upon rollers 18 adapted to run on rails 19 whichare supported at one end by drop'brackets 20 suspended from the perimetric frame 11' -of'the hopper '10, and at the opposite end, by a built up structural iron i With this brief description of a typical ash pit equipment, I will'next proceedto describe the gate actuating mechanism of my I I Referring now more invention in detail. particularly toFigs. IIIa-nd IV, it will be seen that this mechanism comprises a screw 23wh1ch 1s posltionally fixed against longitudinal movement by virtue of having its ends journalled in stationary whereof the latter is shown as an anti-'triction'ball bearing capable of taking -the'thrust of the screw from opposite directions. The bearings 24-25 are secured between opposite ends of opposing upper and lowerchannel irons 2626 that extend longitudinally of the interval intermediate the rails 1'9 andare bolted or otherwise secured .to transverse ties 27 supporting said rails, as shown in Figs. '11 and IV. The screw 23 engages a rectangular nut 28, which, as shown in Figs. III and IV, is lodged, with capacity for self-positioning vertically, .in the hollow of a follower 2.9.that closely fits the guide way jointly afforded by the opposing channels 26-26- At opposite sides, this follower 29 has trunnions 3.0 that project laterally through theside slots 31 between the flanges of the channclsx26-26 where they are ene depending from an overhead bearings gaged by a straddling angle bracket 32 at the forward end of the gate 13.

' 'As a means to drive the screw 23, I employ an electric motor M wherefrom power is transmitted to said screw through the medium" of interposed intermeshingspeed reducing gears 33, 34, see Fig. III. I Of these, I

, the gear 34L is mounted free on the hub of a associated compression springs '38.

disc 35 keyed on the outer end of the screw this 1 arrangement itwill be; apparent that e 10st: motion may take place between the motor M'; and the screw 23 to protect the parts v against injury inthe event of over-runnlng of said motor after the gate 13 has been moved-to the full limit in either direction.

The latter contingencymay be oifsetto an :extent by using a 'magneticbrake of any suitable comn1erc1al-type,here1n convention- I ally represented at 39 in Figs. I and II, as @an auxiliary appurtenance. i

c To the end ofrendering the controlof the 7 motor Mautomatic, I employ limit switches V f40+ 11 which are shown "as secured to the of the motor when the gate 13 reaches the j ope nor closed position] uch operation will lower guide channel 26 near opposite ends,

.c with rollers 4H3 that, respectiyely, proand whereofthe actuating arms are equipped ject through slots iinthe main web'of said -.lower;cha inel so as to'be in the path of the follower. -29, hereinbefore' referred to for actuation of said switches to open the circuit:

guideway connected to said.

dinated with the trunnions 30 of the follower 29, see Fig. 'VI. v a

For brevity, the limit switches 4:0, 4:1 have been omitted from the last described embodiment since their operation inconnection with the organization of Fig. V is thought to be obvious from previous disclosure herein.

Having thus described my invention, I claim:

A-mechanism of the, character -v described comprising a sliding gate, a guideway adjacent said gate comprising a pair of opposed channels, bearings mounted between said channels, a motor-operated screw mounted in said bearings and housed in said guideway, and a follower nuton said screw insaid gate between the flanges ofsaid channels. v

In testimony whereof, I have hereunto signed my name at. Philadelphia, Pennsyl;

vania, this 3rd day of May, 1926. 1

5 ROBERT H. BE MONT.

beobviousuponcursoryexamination of Fig;

III. The limit switches 40, 41 may be of standardconstruction, and the connections to the motor M and power line made in ac-. cordance with customary practice familiar to I I those skilled in theart to which thisinven-c i 7 that a suitable reversing switch is used' 'in c association with the motor M to control rota-. 7 tion in, opposite directions as required in;

opening andclosing the gate 13. Fig. V shows an organization whereinrthe 'tion pertains. It is of course-to be assumed V ash-hopper' iais equippedwith a pivoted gate 46 to control gravitydischarge of the ashes 1 therefrom. As in the first arrangement 1 herein described,,I employ a positionallyfixedscrew 23 with a follower 29' to carry hopper 43 at one side-;-but, as before, driving- .ls eifected'by an electric m'otor'M through speedpreductiongearing 33 34. Movement of the follower 29 is transmitted to the piv .otedgate 46' by suitable linkage 47 involving 7 b5 connecting rodsf48 that are pivotally'coor-T: 

